Novel Inverse Method for CNS Radiotherapy
“3D Printed Mask for GBM and Brain Mets”
This is a single site, investigator initiated study that aims to explore the feasibility of using a personalized 3D printed immobilization mask for CNS patients undergoing radiation therapy. For the purpose of this study, patients will undergo the standard CT SIM, and MR SIM necessary for radiation therapy, creating the masks from the MRIs. Prior to the start of their treatment, patients will have an additional CT scan with the 3D printed mask to confirm safety and treatment accuracy. Patients will then proceed with their standard radiation therapy, immobilized with the mask. There will be a control group that will be treated with the standard thermoplastic mask, as a comparison measure. Both groups will complete a mask tolerability questionnaire throughout the course of their treatment to capture the level of discomfort patients may feel with either masks.
Device - 3D-printed mask
After patient is enrolled to the study, patients will have CT Sim. MR Sim (used to create 3D printed mask for intervention arm only) CT sim repeat (for intervention arm only) before start of radiation Patients will be asked to fill out a questionnaire after each CT Scan, and during the first and last week of radiation treatment
Device - Thermoplastic mask
Patients will undergo standard of care simulation, planning and treatment with conventional workflow using thermoplastic mask.They will complete the tolerability questionnaire after CT-sim, and towards the end of the first and last week of treatment.
MRI-based Immobilization and Planning: A Feasibility Study of a Novel Inverse Method for CNS Radiotherapy